1 /*-
2 * Copyright (c) 1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/bus.h>
33 #include <sys/malloc.h>
34 #include <sys/module.h>
35 #include <machine/bus.h>
36 #include <sys/rman.h>
37
38 #include <machine/vmparam.h>
39 #include <vm/vm.h>
40 #include <vm/pmap.h>
41 #include <machine/pmap.h>
42 #include <machine/md_var.h>
43
44 #include <machine/resource.h>
45 #include <isa/isavar.h>
46 #include <i386/isa/isa_compat.h>
47 #include <i386/isa/isa_device.h>
48
49 struct isa_compat_resources {
50 struct resource *ports;
51 struct resource *memory;
52 struct resource *drq;
53 struct resource *irq;
54 };
55
56 int
57 isa_compat_nextid(void)
58 {
59 static int id = 2; /* id_id of -1, 0 and 1 are "used" */
60
61 return id++;
62 }
63
64 static void
65 isa_compat_alloc_resources(device_t dev, struct isa_compat_resources *res)
66 {
67 int rid;
68 u_long start, count;
69
70 if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
71 &start, &count) == 0) {
72 rid = 0;
73 res->ports = bus_alloc_resource(dev, SYS_RES_IOPORT,
74 &rid, 0ul, ~0ul, 1,
75 RF_ACTIVE);
76 if (res->ports == NULL && bootverbose)
77 printf("isa_compat: didn't get ports for %s\n",
78 device_get_name(dev));
79 } else
80 res->ports = 0;
81
82 if (bus_get_resource(dev, SYS_RES_MEMORY, 0,
83 &start, &count) == 0
84 && start != 0) {
85 rid = 0;
86 res->memory = bus_alloc_resource(dev, SYS_RES_MEMORY,
87 &rid, 0ul, ~0ul, 1,
88 RF_ACTIVE);
89 if (res->memory == NULL && bootverbose)
90 printf("isa_compat: didn't get memory for %s\n",
91 device_get_name(dev));
92 } else
93 res->memory = 0;
94
95 if (bus_get_resource(dev, SYS_RES_DRQ, 0,
96 &start, &count) == 0) {
97 rid = 0;
98 res->drq = bus_alloc_resource(dev, SYS_RES_DRQ,
99 &rid, 0ul, ~0ul, 1,
100 RF_ACTIVE);
101 if (res->drq == NULL && bootverbose)
102 printf("isa_compat: didn't get drq for %s\n",
103 device_get_name(dev));
104 } else
105 res->drq = 0;
106
107 if (bus_get_resource(dev, SYS_RES_IRQ, 0,
108 &start, &count) == 0) {
109 rid = 0;
110 res->irq = bus_alloc_resource(dev, SYS_RES_IRQ,
111 &rid, 0ul, ~0ul, 1,
112 RF_SHAREABLE | RF_ACTIVE);
113 if (res->irq == NULL && bootverbose)
114 printf("isa_compat: didn't get irq for %s\n",
115 device_get_name(dev));
116 } else
117 res->irq = 0;
118 }
119
120 static void
121 isa_compat_release_resources(device_t dev, struct isa_compat_resources *res)
122 {
123 if (res->ports) {
124 bus_release_resource(dev, SYS_RES_IOPORT, 0, res->ports);
125 res->ports = 0;
126 }
127 if (res->memory) {
128 bus_release_resource(dev, SYS_RES_MEMORY, 0, res->memory);
129 res->memory = 0;
130 }
131 if (res->drq) {
132 bus_release_resource(dev, SYS_RES_DRQ, 0, res->drq);
133 res->drq = 0;
134 }
135 if (res->irq) {
136 bus_release_resource(dev, SYS_RES_IRQ, 0, res->irq);
137 res->irq = 0;
138 }
139 }
140
141 #define irqmask(x) ((x) < 0 ? 0 : (1 << (x)))
142
143 static int
144 isa_compat_probe(device_t dev)
145 {
146 struct isa_device *dvp = device_get_softc(dev);
147 struct isa_compat_resources res;
148 struct old_isa_driver *op;
149 u_long start, count;
150
151 /* No pnp support */
152 if (isa_get_vendorid(dev))
153 return (ENXIO);
154
155 bzero(&res, sizeof(res));
156 /*
157 * Fill in the isa_device fields.
158 */
159 op = device_get_driver(dev)->priv;
160 dvp->id_id = isa_compat_nextid();
161 dvp->id_driver = op->driver;
162 if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
163 &start, &count) == 0)
164 dvp->id_iobase = start;
165 else
166 dvp->id_iobase = -1;
167 if (bus_get_resource(dev, SYS_RES_IRQ, 0,
168 &start, &count) == 0)
169 dvp->id_irq = irqmask(start);
170 else
171 dvp->id_irq = 0;
172 if (bus_get_resource(dev, SYS_RES_DRQ, 0,
173 &start, &count) == 0)
174 dvp->id_drq = start;
175 else
176 dvp->id_drq = -1;
177 if (bus_get_resource(dev, SYS_RES_MEMORY,
178 0, &start, &count) == 0) {
179 dvp->id_maddr = (void *)(uintptr_t)start;
180 dvp->id_msize = count;
181 } else {
182 dvp->id_maddr = NULL;
183 dvp->id_msize = 0;
184 }
185 dvp->id_unit = device_get_unit(dev);
186 dvp->id_flags = device_get_flags(dev);
187 dvp->id_enabled = device_is_enabled(dev); /* XXX unused */
188 dvp->id_device = dev;
189
190 /*
191 * Do the wrapped probe.
192 */
193 if (dvp->id_driver->probe) {
194 int portsize;
195 void *maddr;
196 struct isa_device old;
197
198 isa_compat_alloc_resources(dev, &res);
199 if (res.memory)
200 maddr = rman_get_virtual(res.memory);
201 else
202 maddr = 0;
203 dvp->id_maddr = maddr;
204 old = *dvp;
205 portsize = dvp->id_driver->probe(dvp);
206 isa_compat_release_resources(dev, &res);
207 if (portsize != 0) {
208 if (portsize > 0 || dvp->id_iobase != old.id_iobase)
209 bus_set_resource(dev, SYS_RES_IOPORT,
210 0, dvp->id_iobase, portsize);
211 if (dvp->id_irq != old.id_irq)
212 bus_set_resource(dev, SYS_RES_IRQ, 0,
213 ffs(dvp->id_irq) - 1, 1);
214 if (dvp->id_drq != old.id_drq)
215 bus_set_resource(dev, SYS_RES_DRQ, 0,
216 dvp->id_drq, 1);
217 if (dvp->id_maddr != old.id_maddr
218 || dvp->id_msize != old.id_msize) {
219 maddr = dvp->id_maddr;
220 if (maddr != NULL)
221 bus_set_resource(dev,
222 SYS_RES_MEMORY,
223 0,
224 kvtop(maddr),
225 dvp->id_msize);
226 else
227 bus_delete_resource(dev,
228 SYS_RES_MEMORY,
229 0);
230 }
231 return 0;
232 }
233 }
234 return ENXIO;
235 }
236
237 static int
238 isa_compat_attach(device_t dev)
239 {
240 struct isa_device *dvp = device_get_softc(dev);
241 struct isa_compat_resources res;
242 int error;
243
244 bzero(&res, sizeof(res));
245 isa_compat_alloc_resources(dev, &res);
246 if (dvp->id_driver->attach)
247 dvp->id_driver->attach(dvp);
248 if (res.irq && dvp->id_irq && dvp->id_intr) {
249 struct old_isa_driver *op;
250 void *ih;
251
252 op = device_get_driver(dev)->priv;
253 error = BUS_SETUP_INTR(device_get_parent(dev), dev,
254 res.irq, op->type,
255 dvp->id_intr,
256 (void *)(uintptr_t)dvp->id_unit,
257 &ih);
258 if (error)
259 printf("isa_compat_attach: failed to setup intr: %d\n",
260 error);
261 }
262 device_printf(dev, "driver is using old-style compatability shims\n");
263 return 0;
264 }
265
266 static device_method_t isa_compat_methods[] = {
267 /* Device interface */
268 DEVMETHOD(device_probe, isa_compat_probe),
269 DEVMETHOD(device_attach, isa_compat_attach),
270
271 { 0, 0 }
272 };
273
274 /*
275 * Create a new style driver around each old isa driver.
276 */
277 void
278 isa_wrap_old_drivers(void)
279 {
280 int i;
281 struct old_isa_driver *op;
282 devclass_t isa_devclass = devclass_find("isa");
283
284 for (i = 0, op = &old_drivers[0]; i < old_drivers_count; i++, op++) {
285 driver_t *driver;
286 driver = malloc(sizeof(driver_t), M_DEVBUF, M_NOWAIT);
287 if (!driver)
288 continue;
289 bzero(driver, sizeof(driver_t));
290 driver->name = op->driver->name;
291 driver->methods = isa_compat_methods;
292 driver->softc = sizeof(struct isa_device);
293 driver->priv = op;
294 if (op->driver->sensitive_hw)
295 resource_set_int(op->driver->name, -1, "sensitive", 1);
296 devclass_add_driver(isa_devclass, driver);
297 }
298 }
299
300 int
301 haveseen_iobase(struct isa_device *dvp, int size)
302 {
303 int rid;
304 struct resource *res;
305 device_t dev = dvp->id_device;
306 int base = dvp->id_iobase;
307
308 /*
309 * Ask for resource 1 so that we don't hurt our hints. In theory
310 * this should work, but....
311 */
312 rid = 1;
313 res = bus_alloc_resource(dev, SYS_RES_IOPORT,
314 &rid, base, base + size, size, RF_ACTIVE);
315 if (res)
316 bus_release_resource(dev, SYS_RES_IOPORT, rid, res);
317 return res ? 0 : 1;
318 }
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